Situation:
It's my birthday today and I am getting calls and messages from my friends and relatives for wishes. Some of them are close friends and some relatives are younger than me while others are elder than me. Some are just acquaintance.
However, I am a bit confused about showing them gratitude for their wishes and replying with a thank you message.
My question is, who should I say Thanks, Thank You and Thank You Very Much without sounding too formal?